Predicting robustness against transient faults of MPI based programs

The evaluation of a program’s behavior in the presence of transient faults is often a very time consuming work. In order to achieve significant data, thousands of executions are normally required and each execution will have the significant overhead of the fault injection environment. Our previously published methodology reduced significantly the time needed to evaluate the robustness of a program execution by exhaustively analyzing its basic blocks trace instead of using fault injection. In this paper we present an even forward improvement in the evaluation time of parallel programs robustness against transient faults by combining our methodology with PAS2P – a method that strives to describe an application based on its messagepassing activity. The combination of our approach and PAS2P allowed us to predict the robustness of larger parallel programs, reducing in some cases in more than 20 times the time needed to calculate the robustness while obtaining a robustness prediction error of less than 4%. Transient faults, robustness, soft errors, reliability, PAS2P